The 'rusers -l' command yields output with a literal '%s' after the remote
host name, e.g. :
entropi rama.ee.uwa.edu.au:%s Dec 6 13:55 :08 (rama)
Apparently the '%s' should return the remote tty, e.g. on a Solaris host:
entropic rama.ee.uwa.edu.:pts/4 Dec 6 13:55 6 (rama)
This appears to be fixed (i.e. I can't reproduce) in rusers-0.16-1.
If you care I have an patched version of the 6.1 rpm at